| 摘要 |
PURPOSE: A blasting method is provided to perform a perform blasting with less vibration in spite of proximity distance by reducing the vibration of blasting by 25~30. CONSTITUTION: A blasting method for low shock explosive using gunpowder of low-velocity explosives and general explosives for a tunnel blasting process comprises next contents. A blasting hole is punched. A fine hollowness sphere body of 4.0 weight%, a sensitizer, is included in the emulsion matrix in order to be used to a gunpowder container. The explosive vessel comprises a double pipe, a space part, a filler and top cap. The filler is put in the space part. The emulsion matrix is made of ammonium nitrate, sodium nitrate, water, and fuel material. The emulsion-based bottom width inside explosive is charged. |
